A comprehensive study on porosity modelling and its impact on fracture behavior of edge cracked FG structures using XIGA

IF 6.3 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composite Structures Pub Date : 2024-09-23 DOI:10.1016/j.compstruct.2024.118602

Sushant Kumar, Gagandeep Bhardwaj, Neeraj Grover

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引用次数: 0

Abstract

In the present work, the fracture analysis of functionally graded (FG) porous structure containing an edge cracked is carried out in the presence of different types of porosity distributions using extended isogeometric analysis (XIGA). Firstly, the different types of porosity distribution functions are mathematically modeled in the porous FG structure across the length of the domain. The effective properties of the porous FG structure are computed using power law. Also, an additional term of porosity is incorporated in the power law to include the effect of porosity in the FG structure. The effective properties are computed across the length of the structure in the presence of different types of porosity distributions. Further, a pre-existing crack is modeled in the domain to study its influence on the fracture behaviour of porous FG structure using XIGA. To validate the accuracy, the results for the non-porous FG structure are compared with the available results in the literature (with the analytical and numerical solution), and they are found in good agreement (percentage error in the range of 0.04–––1.78%). Moreover, the comparative study is performed to investigate the influence of different types of porosity distributions on the fracture behaviour of FG structure.

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利用 XIGA 对孔隙率建模及其对边缘开裂 FG 结构断裂行为的影响进行综合研究

在本研究中，利用扩展等几何分析法（XIGA）对存在不同类型孔隙率分布的含有边缘裂缝的功能分级（FG）多孔结构进行了断裂分析。首先，在多孔 FG 结构的整个域长度上对不同类型的孔隙率分布函数进行数学建模。多孔 FG 结构的有效特性采用幂律进行计算。此外，在幂律中还加入了一个额外的孔隙度项，以包括 FG 结构中的孔隙度效应。在存在不同类型孔隙率分布的情况下，计算了整个结构长度上的有效特性。此外，使用 XIGA 对域中预先存在的裂缝进行建模，以研究其对多孔 FG 结构断裂行为的影响。为了验证其准确性，将无孔 FG 结构的结果与文献中的现有结果（分析和数值解决方案）进行了比较，结果发现二者具有良好的一致性（百分比误差范围为 0.04--1.78%）。此外，对比研究还探讨了不同类型的孔隙率分布对 FG 结构断裂行为的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Composite Structures 工程技术-材料科学：复合

CiteScore

12.00

自引率

12.70%

发文量

1246

审稿时长

78 days

期刊介绍： The past few decades have seen outstanding advances in the use of composite materials in structural applications. There can be little doubt that, within engineering circles, composites have revolutionised traditional design concepts and made possible an unparalleled range of new and exciting possibilities as viable materials for construction. Composite Structures, an International Journal, disseminates knowledge between users, manufacturers, designers and researchers involved in structures or structural components manufactured using composite materials. The journal publishes papers which contribute to knowledge in the use of composite materials in engineering structures. Papers deal with design, research and development studies, experimental investigations, theoretical analysis and fabrication techniques relevant to the application of composites in load-bearing components for assemblies, ranging from individual components such as plates and shells to complete composite structures.